Battery pack



FIG. 1 is a perspective view of the battery pack;

FIG. 2 is a side view of the battery pack (the opposite side not shownis the same as the side shown);

FIG. 3 is a front view of the battery pack (the rear view not shown isthe same as the side shown);

FIG. 4 is a top view of the battery pack; and,

FIG. 5 is a bottom view of the battery pack.

The ornamental design for a battery pack, as shown and described.